A supply schedule can be defined as:

A supply schedule is most accurately described as a table illustrating the quantity supplied at various prices. This means it organizes data that shows how much of a good or service producers are willing to sell at different price points. The key aspect of this definition is that it directly correlates price levels with the quantities that suppliers are prepared to provide to the market, reflecting the basic principles of supply in economics.

This visual representation allows economists and businesses to understand how supply responds to price changes, and serves as a foundational tool for analyzing market behavior. It is essential for illustrating the law of supply, which states that all else being equal, an increase in price results in an increase in the quantity supplied.

In contrast, the other options do not accurately capture the function of a supply schedule. For instance, representing price elasticity of supply involves measuring responsiveness of quantity supplied to price changes rather than merely listing quantities at different prices. A chart mapping consumer preferences relates more to demand than supply, focusing on what consumers desire rather than what producers are willing to create. Lastly, a record of historical price changes documents past market conditions instead of providing a current snapshot of supply behavior in relation to price.